| XIANG Ke-feng,YIN Huan,SONG Yue-gan,YANG Yi,LI Guo-qiang,LAI Lin.Low Ice Adhesion Deicing/Anti-icing Surface of Porous Microcavity Inspired by Nepenthes[J],52(10):313-320 |
| Low Ice Adhesion Deicing/Anti-icing Surface of Porous Microcavity Inspired by Nepenthes |
| Received:January 06, 2023 Revised:August 25, 2023 |
| View Full Text View/Add Comment Download reader |
| DOI：10.16490/j.cnki.issn.1001-3660.2023.10.027 |
| KeyWord:bionics femtosecond laser direct writing nano-microcavity structure SLIPS low ice adhesion anti-icing deicing |
| Author | Institution |
| XIANG Ke-feng |
School of Manufacturing Science and Engineering, Southwest University of Science and Technology, Sichuan Mianyang , China |
| YIN Huan |
School of Manufacturing Science and Engineering, Southwest University of Science and Technology, Sichuan Mianyang , China |
| SONG Yue-gan |
School of Manufacturing Science and Engineering, Southwest University of Science and Technology, Sichuan Mianyang , China |
| YANG Yi |
School of Manufacturing Science and Engineering, Southwest University of Science and Technology, Sichuan Mianyang , China |
| LI Guo-qiang |
School of Manufacturing Science and Engineering, Southwest University of Science and Technology, Sichuan Mianyang , China |
| LAI Lin |
School of Manufacturing Science and Engineering, Southwest University of Science and Technology, Sichuan Mianyang , China |
|
| Hits: |
| Download times: |
| Abstract: |
| Ice accretion on solid surfaces is a common phenomenon in winter, which brings a lot of inconvenience to daily life and even causes serious disasters. At first, the superhydrophobic surface is considered as an ideal anti-icing surface for its micro/nano-textured structure and low surface tension. Air cushion formed between droplets and the surface leads to the decrease of contact area which contributes to delayed icing. In a high humidity environment, however, the droplets can easily intrude into the micro-nano structures, resulting in interlock. The ice is more difficult to remove. Fortunately, slippery liquid-infused surface (SLIPS) with lubricating fluids to fill micro-nanostructures inspired by nepenthes can be applied in anti-icing for its low friction force. With lubricating fluid with a high freezing point as the medium, the ice can be easily removed even in an ultra-low temperature and high humidity environment. However, lubricant losses are inevitable during the icing/deicing cycles, resulting in a great durability reduction and a significant drop of the anti-deicing performance. Therefore, how to reduce the loss of lubricating fluid and improve the durability of SLIPS has become a major challenge. To improve the anti-icing/deicing durability of slippery liquid-infused surfaces (SLIPS), the stereo porous nano-microcavity array was presented under the inspiration of the slippery liquid-infused surface of nepenthes. The stereo porous nano-microcavity array was fabricated by a femtosecond laser to irradiate the nickel foil surface immersed absolutely in ethanol. Then, C16F17H19O3Si was used to modify the surface to increase the affinity of the surface to silicone oil. Finally, 50 cSt silicone oil was used to spin-coat on the modified surface, obtaining the stereo porous nano-microcavity SLIPS. The morphologies of the stereo porous nano-microcavity structure were analyzed by scanning electron microscope (SEM) and optical microscope (OM). The anti-icing/deicing performance, ice adhesion and durability of the SLIPS were evaluated through the icing delay test, ice adhesion test and high-temperature evaporation test, respectively. Due to the capillary action of the stereo porous nano-microcavity structure, the distilled water droplets on the surface of the stereo porous nano-microcavity with lipophilicity and hydrophobicity could be pinned. It indicated that the stereo porous nano-microcavity structure could perfectly lock the lubricating fluid to improve the durability of SLIPS. Compared with the unstructured surface, the icing delay test showed that the SLIPS delayed the icing time by 2.8 times. Furthermore, the supercooled droplet was affected by condensed water in a low temperature and high humidity environment to realize the self-driving of condensed water. The SLIPS was put in a high temperature environment of 80 ℃ for ten minutes, then followed with the icing/deicing cycle experiment. After 10 cycles, the contact angle was 110°, the sliding angle was 8.5°, and ice adhesion was 3.6 kPa. The stereo porous nano-microcavity array structure is induced on the surface of nickel foil by femtosecond laser scanning nickel foil immersed in ethanol. It can reduce the loss of lubricant on the SLIPS surface and effectively improve the ice durability of SLIPS. Excellent durability and low ice adhesion make this SLIPS have the potential to be applied in various anti-icing/deicing fields. |
| Close |
|
|
|